Biomechanical Effect Of Heel Raised Jogging On Young Females

Objective: The main purpose of this study is to explore the kinematics variation of ankle,knee, and hip joint of young women and analyze the effect of plantar pressure on young womenunder different heel heights during jogging to provide biomechanical scientific theoretical basis tothe footwear manufacturers and footwear designers, contributing to the production and design ofboth a comfortable and beautiful high heels.Methods: This study selected10healthy young women as experimental subjects. Objects ofthis study were1.5cm flat shoes (no heel raise),4.5cm and7cm stiletto heels (heel raise).(1)Kinematical experiment. All participants were asked to perform three repetitions of jogging withnatural and comfortable speed at gait lab under three heel-height conditions each. Vicon three-dimensional motion capture system was used to obtain testing data and Vicon Nexus and SPSSstatistical software packages were used for data analysis. Test indexes include three-dimensionalhip, knee and ankle joint range and the angle changes of three-dimensional hip knee and ankle jointduring whole jogging gait.(2) Plantar pressure measurements. Experimental procedures andrequirements were the same as kinematical experiments. Plantar pressure between foot-shoesurface was measured with Novel Peder insole plantar pressure measurement systems, and SPSSstatistical software was used for data analysis. Test indexes include the contact area, peak pressure,maximum force and force-time integral.Results:(1) kinematical experiment: High-heeled shoes restricted ankle range of motion butincreased the freedom of knee abduction-adduction and hip flexion-extension during high heeledjogging gait. In addition, we also found a decrease in ankle inversion during heel height jogginggait.(2) Plantar pressure measurement: Plantar pressure distribution pattern showed a significantdifference during heel raised jogging, especially increased in the M1region and decreased in theM4-5and midfoot. However, the plantar pressure in M2-3region had no obviously alterationduring jogging gait. Overall, plantar pressure transferred to the anteromedial.Conclusions: These results indicated that the posture of heel raising might cause arthritis andincrease the risk of ankle sprain; changes of plantar pressure distribution pattern might causeforefoot pain, even hallux valgus and other pedopathy with long-term wearing. So young womenshould choose highly affordable shoes to wear and select walking instead of jogging as possible.